Spray polyurethane foam is often praised for its energy efficiency, but there's another advantage of spray foam to keep in mind: its versatility. This multi-purpose material has so many different uses in construction. While there are several varieties of spray foam, often a single product can be used for various applications.
When designing a building envelope, there are many factors to keep in mind. The structure must be insulated, protected from water, and sealed from air leaks. If using traditional materials for your construction projects, you would need several different items to accomplish all of these tasks. However, spray foam accomplishes them all. It's a single-source solution for insulating and sealing commercial buildings as well as residences.
Spray foam can also be used on roofs. In these applications, it serves as a protective layer between the building and the outdoor elements, but also insulates, meaning that less extra insulation needs to be added to the roof structure. Roofs built with spray foam provide comfort, durability and energy efficiency.
When used as an insulating material in attics, crawlspaces and walls, spray foam also eliminates the need for a lot of sealants. When sprayed on a surface, it seals cracks and crevices, preventing air leaks. It can be used not only in new homes, but also in existing construction. Since it has such a high R-value, only a thin layer is needed, and thus it is a viable option for older buildings with thin wall spaces that cannot accommodate other types of insulation.